5.9 Interaction with other modes

The only mode flymake currently knows about is compile.

Flymake can be configured to not start syntax check if it thinks the
compilation is in progress. The check is made by the
flymake-compilation-is-running, which tests the
compilation-in-progress variable. The reason why this might be
useful is saving CPU time in case both syntax check and compilation
are very CPU intensive. The original reason for adding this feature,
though, was working around a locking problem with MS Visual C++
compiler.

Flymake also provides an alternative command for starting compilation,
flymake-compile: